KR20080101807A - Method and apparatus for managing queuing function in wireless communication system - Google Patents

Abstract

A method and an apparatus for managing a queuing function in a wireless telecommunications system for preventing the failure of the queuing function are provided to prevent the failure of the queuing function in case to allow the user equipment stays at the original frequency layer and the other frequency layer does not exist. It queues in the frequency layer in which the user equipment is the user equipment located through a cell update procedure. A wait time information element is inserted into the cell update confirm message. The frequency information element is not inserted into a cell update confirm message. A Cell Update confirmation message is transmitted to the user equipment.

Description

Method and managing queuing operation for a wireless communications system and related apparatus

The present invention relates to a method and apparatus for managing a queuing function in a wireless communication system, and more particularly, to a method and an apparatus for managing a queuing function of a cell update procedure in a wireless communication system.

Third generation mobile communication technology adopts wideband code division multiple access (WCDMA) wireless access method, providing high frequency spectrum utilization efficiency, coverage regardless of distance, and high quality, high speed multimedia data transmission. At the same time, it is possible to satisfy various different QoS service requirements at the same time, provide a diversified two-way transmission service with elasticity and provide relatively good communication quality, effectively lowering the communication interruption rate.

Speaking of Universal Mobile Telecommunications System (UMTS), the third generation mobile communication system is largely a user equipment (UE), a UMTS Terrestrial Radio Access Network (UTRAN) and a core network (Core Network). , CN) three parts, and the communication protocol used includes an access layer (AS) and a non-access layer (Non-Access Stratum). The access layer includes Radio Resource Control (RRC), Radio Link Control (RLC), Media Access Control (MAC), Packet Data Convergence Protocol (PDCP), A plurality of functions, such as broadcast multicast control (BMC), include different sublayers. Since the operation of each of the sub-layers is well known in the art, description thereof is omitted here.

Radio resource control is the third layer communication protocol, which is the core of the communication protocol of the access layer, and exchanges radio resource information, radio resource setting control, QoS control, channel transmission type setting control, packet division rearrangement processing control, and non-access layer Communication protocol transmission processing and the like are all executed through the radio resource control layer. Between a user device and a network terminal (radio communication access network), the radio resource control layer exchanges a radio resource control message (RRC message) through a radio resource control procedure. The radio resource control message is composed of many information elements (IE), and carries the necessary information to set the protocol entities of the second layer protocol (radio link control, media access control) and the first layer protocol (physical layer). It is used to change or release, thereby establishing and coordinating or canceling data exchange channels, thereby enabling data packet exchange.

According to the wireless resource control protocol norm enacted in the 3rd Generation partnership project (3GPP), the radio resource control procedure includes a cell update procedure, which is usually activated by a user device It is used to notify the situation to the network terminal. In the radio resource control message exchange during the cell update procedure, when the user equipment first transmits a cell update message to the network terminal, the network terminal returns a cell update confirmation message, and finally the user equipment transmits a cell update confirmation message. Based on the message content, radio bearer reset or release, mobility information update or transport channel reset are performed.

The cell update procedure is equipped with a queuing function that is used to allow the network terminal to transition the user equipment to another frequency layer when the service frequency layer is blocked, to wait for a period of time, and then activate the cell update procedure again. Is as follows. When the user equipment activates the cell update procedure, the user equipment sends a cell update message to the network terminal, and the network terminal sends a frequency update and a wait time in the cell update confirmation message. Insert two information elements to instruct the user device to perform the queuing function. The user equipment in the cell call channel state selects a specific cell based on the frequency layer indicated by the frequency information information element (IE), and the user equipment in the radio registration area call channel state selects a specific cell based on the indicated frequency layer. Select the cell in the table. Finally, based on the "wait time" information element, the user equipment first enters the set time of the standby state in the transitioned frequency layer and reactivates the cell update procedure. The frequency layer indicated by the "frequency information" information element is not the frequency layer in which the user equipment is currently located.

By the way, when a jam occurs in the service frequency layer of the network terminal, the neighboring frequency layer may be further blocked, or there may be no other frequency layer in the vicinity. In this case, the network terminal cannot queue the user device.

Accordingly, an aspect of the present invention is to prevent a queuing function failure by providing a method for managing a queuing function for queuing a user device through a cell update procedure among network terminals used in a wireless communication system and a related apparatus.

The present invention discloses a method for managing a queuing function of a user device in a call state for receiving downlink signaling at a network terminal of a wireless communication system. The method includes queuing the user equipment at a frequency layer in which the user equipment is currently located through a cell update procedure, and maintaining the user equipment during the call state.

The present invention also discloses a communication apparatus for preventing queuing failure of a user apparatus by managing a queuing function of a user apparatus which is used in a wireless communication system and is in a call state for receiving downlink signaling. The communication device includes a control circuit for realizing a function of the communication device; A central processing unit installed in the control circuit to execute program code to control the control circuit; And a memory device installed in the control circuit and connected to the central processing unit and used to store the program code. The program code includes means for queuing the user device at the frequency layer in which the user device is currently located via a cell update procedure and also maintaining the user device in the call state.

The present invention also discloses a method of executing a queuing function of a user device in a call state for receiving downlink signaling for use in a wireless communication system. The method comprises the steps of activating a cell update procedure and providing a queuing frequency layer if the received message of the cell update procedure includes a first information element for providing a latency of the queuing function. If no information element is included, queuing at the current frequency layer and maintaining it in the call state.

The present invention also discloses a communication apparatus for use in a wireless communication system to manage a queuing function, thereby preventing the queuing function from failing. The communication device is located in a call state for receiving downlink signaling. The communication device includes a control circuit for realizing a function of the communication device; A central processing unit installed in the control circuit to execute program code to control the control circuit; And a memory device installed in the control circuit and connected to the central processing unit and used to store the program code. The program code includes means for activating a cell update procedure and a first information element for providing a waiting time of the queuing function in a received message of the cell update procedure. And means for queuing at the current frequency layer where the information element is not included and maintaining it in the call state.

In the prior art, when the user device proceeds with the queuing function, the network terminal does not allow the user device to stay in the original frequency layer and must transition to the other frequency layer. In contrast, the present invention allows the user equipment to stay in the original frequency layer to prevent a situation in which the queuing function fails if the other frequency layer is also blocked or does not exist.

1 is an explanatory diagram of a wireless communication system 10. The wireless communication system 10 is preferably a third generation mobile communication system, and is simply composed of a network terminal and a plurality of user devices. In FIG. 1, the network terminal and the user device are for explaining the structure of the wireless communication system 10. In fact, the network terminal may be regarded as including a plurality of base stations, wireless network controllers, etc. according to different demands. The user device may be viewed as a mobile phone or a computer system.

2 is a functional block diagram of a wireless communication device 100. For brevity, in FIG. 2, the input device 102, the output device 104, the control circuit 106, the central processing unit 108, the memory device 110, and the program code of the wireless communication device 100 ( 112) and transceiver 114 only. The control circuit 106 of the wireless communication device executes the program code 112 stored in the memory device 110 through the central processing unit 108, and further controls the operation of the wireless communication device 100, which is input The device 102 receives a signal input by the user through the device 102 (for example, a keyboard) or outputs a signal such as an image or an audio signal through the output device 104 (for example, a monitor or a speaker). The transceiver 114 is used to receive or send a radio signal, and transmits the received signal to the control circuit 106, or outputs the signal formed by the control circuit 106 in a wireless telegraphy method. In other words, in the structure of the communication protocol, the transceiver 114 can be viewed as part of the first layer, and the control circuit 106 is used to realize the functions of the second and third layers.

FIG. 3 is an explanatory diagram of the program code 112 in FIG. 2. The program code 112 includes an application program layer 200, a third layer interface 202, and a second layer interface 206 and is connected to the first layer interface 218. The radio resource control unit 222 is located in the third layer 202 and is located on the first layer 218 and the second layer 206 based on a radio resource control message (RRC message) and an information element (IE). It is also used to exchange signaling with the network terminal through the radio resource control procedure.

In a situation where the wireless communication device 100 is used to realize a network terminal, the wireless communication device 100 may queue the user device when the user device in a call state activates a cell update procedure. Preferably, the call state is a cell call channel (CELL_PCH) or a radio registration area call channel (URA_PCH), and the user equipment under the state generally receives only downlink signaling, and only through the cell update procedure. ) And signaling exchange. In this situation, an embodiment of the present invention provides queuing management program code 220 for preventing queuing failure of a user device.

4 is a flow diagram illustrating a flow 40 of an embodiment of the present invention. The flow 40 is used to manage the queuing function of the user equipment of the network terminal of the wireless communication system 10, which can be compiled into the queuing management program code 220, and includes the following steps.

Step 400: Start.

Step 401: Receiving a cell update message sent by the user equipment by activating a cell update procedure.

Step (402): queuing the user device in the frequency layer at which the user device is currently located, through the cell update confirmation message of the cell update procedure, and maintaining the user device in the call state.

Step 404: End.

According to flow 40, an embodiment of the present invention queues the user equipment to the current frequency layer through message exchange of the cell update procedure, and keeps the user equipment in a call state. In other words, during queuing, the user equipment does not transition the operating frequency layer and its radio resource control state.

The message exchange of the cell update procedure includes a cell update (CELL UPDATE) message transmitted from the user equipment to the network terminal and a cell update confirm message (CELL UPDATE CONFIRM) returning from the network terminal to the user equipment. The cell update message is used to activate the cell update procedure in addition to notifying the network terminal of the current communication status of the user equipment.

In order to instruct the user equipment to stay in the current frequency layer, the network terminal inserts only the wait time information element into the cell update confirmation message, but does not insert the frequency info information element and then the cell. Resend the update confirmation message to the user device. The user device stays for at least the set time of the waiting state of the queuing function based on the set time of the wait time information element. The frequency info information element is for indicating a frequency layer for queuing the user device, wherein the indicated frequency layer is not the frequency layer where the user device is currently located. In addition, after staying at least for the set time in the standby state, the user equipment reactivates the cell update procedure.

When the wireless communication device 100 is used as a user device, the wireless resource control unit 222 idles the wireless communication device 100, the cell call channel (CELL_PCH), the wireless registration area call channel (URA_PCH), and the cell. It can be switched between the forward access channel (CELL_FACH) or the cell dedicated channel (CELL_DCH) state. Among them, the cell call channel (CELL_PCH) and the radio registration area call channel (URA_PCH) are both in a call state, and the wireless communication device 100 under the state generally receives only downlink signaling, and only through the cell update process, the network terminal. And signaling exchange can proceed.

In addition, if the wireless communication device 100 realizes a user device in a call state, it is possible to provide another processing scheme according to another embodiment of the present invention.

5 is a flow diagram illustrating a flow 50 of another embodiment of the present invention. The flow 50 is used to manage the queuing function among the user devices used in the wireless communication system 10, where the user device is in a call state for receiving downlink signaling. The flow 50 can be compiled into the queuing management program code 220 and includes the following steps.

Step 500: Start.

Step 502: Activate the cell update procedure.

Step 504: If the received message of the cell update procedure includes a first information element for providing a waiting time of the queuing function and does not include a second information element for providing a queuing frequency layer. Queuing at the current frequency layer and maintaining it in the call state.

Step 506: End.

According to flow 50, after the user equipment in the calling state activates the cell update procedure, the user equipment receives the received message. If the received message includes the first information element for providing the waiting time of the queuing function but does not include the second information element for providing the queuing frequency layer, the user equipment is queued in the current frequency layer, It is also maintained during the call state. Based on the waiting time provided by the first information element, it is preferable that the user equipment enters at least the waiting time of the waiting state of the queuing function and reactivates the cell update procedure after the waiting time is finished. .

The received message is a cell update confirmation (CELL UPDATE CONFIRM) message, the first information element is a wait time information element, the second information element is preferably a frequency information (Frequency info) information element.

Thus, by combining the flow 40 and the flow 50 with each other, when the user equipment enters the queuing function, it can stay in the call state while staying in the current frequency layer.

It should be noted that embodiments of the present invention can manage the queuing function in combination with the prior art. For example, after the user device activates the cell update process, the network terminal determines the frequency layer to which the user device intends to enter, based on the usage of all frequency layers. If the frequency layer other than the frequency layer in which the user equipment is currently located is blocked or does not exist, the network terminal queues the user equipment to the original frequency layer and also maintains the same calling state.

The foregoing is only a preferred embodiment of the present invention, and all equivalent changes and modifications made in accordance with the claims of the present invention fall within the scope of the present invention.

1 is an explanatory diagram of a wireless communication system.

2 is a functional block diagram of a wireless communication device.

3 is an explanatory diagram of a program code of FIG. 2.

4 is a flowchart illustrating a flow of using an embodiment of the present invention in a network terminal.

5 is a flowchart illustrating a flow of using an embodiment of the present invention in a user device.

<Explanation of symbols for the main parts of the drawings>

DESCRIPTION OF SYMBOLS 10 Wireless communication device 102 Input device 104 Output device 106 Control circuit 108 Central processing unit 110 Memory device 112 Program code 114 Transceiver 200 Application layer 202 Third layer 206 Second layer 218 1st floor 220: Queuing management program code 222: Wireless resource control unit

Claims (24)

A method of managing a queuing function of a user device in a call state in a network terminal used in a wireless communication system, Queuing said user equipment to the frequency layer at which said user equipment is currently located, and maintaining said user equipment during said call state, through a Cell Update procedure. The method of claim 1, wherein the queuing of the user device of the wireless communication system to the frequency layer where the user device is currently located through the cell update process includes: Inserting a wait time information element into a CELL UPDATE CONFIRM message; Not inserting a frequency info information element into the cell update confirmation message; And And transmitting the cell update confirmation message to the user device. 3. The method of claim 2, wherein the user device stays for at least the set time of the waiting state of the queuing function based on the set time of the wait time information element. 4. The method of claim 3, wherein the user device reactivates the cell update procedure after staying at least for the set time in the standby state. 2. The method of claim 1, wherein the call state is a cell call channel (CELL_PCH) state or a radio registration area call channel (URA_PCH) state. A communication apparatus for preventing a queuing failure of a user apparatus in a call state by managing a queuing function of a user apparatus used in a wireless communication system, The communication device A control circuit for realizing a function of the communication device; A central processing unit installed in the control circuit and executing program code to control the control circuit; And A memory device installed in the control circuit and connected to the central processing unit and used to store the program code; The program code Means for queuing the user equipment to the frequency layer at which the user equipment is currently located, and for maintaining the user equipment in the call state through a cell update procedure. Device. 7. The apparatus of claim 6, wherein the means for queuing the user device of the wireless communication system to the frequency layer where the user device is currently located via the cell update process comprises: Means for inserting a wait time information element into a CELL UPDATE CONFIRM message; Means for not inserting a frequency info information element into the cell update confirmation message; And Means for transmitting the cell update confirmation message to the user device. 8. The communication device according to claim 7, wherein the user device stays for at least the set time of the standby state of the queuing function based on the set time of the wait time information element. 9. The communication device of claim 8, wherein the user device reactivates the cell update procedure after at least the predetermined time of the standby state. 7. The communication device according to claim 6, wherein the call state is a cell call channel (CELL_PCH) state or a radio registration area call channel (URA_PCH) state. In a method of executing a queuing function of a user device in a call state, which is used in a wireless communication system, Activating a Cell Update procedure; And If the received message of the cell update procedure includes the first information element for providing the waiting time of the queuing function and does not include the second information element for providing the queuing frequency layer, the current message is located. Queuing in the frequency layer and maintaining the call during the call. 12. The method of claim 11, further comprising entering at least the waiting time of the waiting state of the queuing function based on the waiting time provided by the first information element. 13. The method of claim 12, further comprising reactivating the cell update procedure after the wait time has expired. 12. The method of claim 11, wherein the received message is a Cell Update Confirm (CELL UPDATE CONFIRM) message. 15. The method of claim 14, wherein the first information element is a wait time information element. 15. The method of claim 14, wherein the second information element is a frequency info information element. 12. The method of claim 11, wherein the call state is a cell call channel (CELL_PCH) state or a radio registration area call channel (URA_PCH) state. A communication apparatus for preventing queuing failure of a user apparatus in a call state by managing a queuing function of a user apparatus used in a wireless communication system, The communication device A control circuit for realizing a function of the communication device; A central processing unit installed in the control circuit and executing program code to control the control circuit; And A memory device installed in the control circuit and connected to the central processing unit and used to store the program code; The program code Means for activating a Cell Update procedure; And If the received message of the cell update procedure includes the first information element for providing the waiting time of the queuing function and does not include the second information element for providing the queuing frequency layer, the current message is located. Means for queuing at the frequency layer and maintaining it in said call state. 19. The apparatus of claim 18, wherein the program code further comprises: And means for entering at least the waiting time of the waiting state of the queuing function based on the waiting time provided by the first information element. The program code of claim 19, wherein the program code includes: And means for reactivating the cell update procedure after the waiting time expires. 19. The communication apparatus of claim 18, wherein the received message is a cell update confirmation message. 22. The apparatus of claim 21, wherein the first information element is a wait time information element. 22. The communication device of claim 21, wherein the second information element is a frequency info information element. 12. The communication apparatus according to claim 11, wherein the call state is a cell call channel (CELL_PCH) state or a radio registration area call channel (URA_PCH) state.

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